Woodward HighPROtec MCDLV4, Manual

Page: 1003 / 1275

Protective Elements
S>
Testing the threshold values
Feed 80% of the S> threshold to the measuring inputs of the relay.
Increase the fed power slowly until the relay picks up. Compare the measured
value at the time of tripping to the parameterized setting.
Testing the tripping delay
Feed 80% of the S> threshold to the measuring inputs of the relay.
Increase the fed power with an abrupt change to 120% of the
S> threshold. Measure the tripping delay at the output of the relay.
Successful test result
The measured total tripping delays or individual tripping delays, threshold values
and fallback ratios correspond with those values, specified in the adjustment list.
Permissible deviations/tolerances can be found under Technical Data.
1003 MCDLV4 DOK-HB-MCDLV4-2E